a-be aaaa aaab aaac aaad aaae aaap aaba aabb aabc aabd aabp aaca aacb aacc aacd aace aacp aada aadc aade aaea aaec aaep aapa aapc abaa abab abac abad abae abap abb- abba abbb abbe abca abcb abcc abcd abcp abda abec abed abee abpa abpc abpd abpp acaa acab acac acad acae acap acba acca accc accd acce accp acda acdb acdc acde acdp ace- acea acec aced acpa acpd acpe adaa adab adac adad adae adap adba adbc adcc adda addc addd adde adea adeb adee adp- aeac aeap aecb aede apac apap apba apca apcb apcc apcd apda apdd apea apec aped apep appa appc appd baaa baad baba babb babe bac- baca bacc bace bada badb badd bade baed bapa bapc bape bapp bbad bbbb bbdd bbeb bcaa bcap bcbc bcbp bcca bccc bcda bcde bcec bcpp bdbc bddc bdpc bead beap beba bebb bebe beca beda bede beeb beed beep bpcp bpda bpea c-cd caaa caab caac caap caba cabe cac- caca cacc cace cada cadc cadd cade caec capa capb capc capd cape capp cbac cbbc cbca cbcc cbce cbcp cbdb cbdc cbea cbec cbee cbpc cbpp ccaa ccab ccac ccad ccap ccba ccbc ccca cccb cccc cccp ccdc ccdp cced ccee ccpa ccpe ccpp cd-e cdaa cdac cdad cdba cdda cddb cdec ceac cead ceba cebp cec- ceca cece cecp ceda cedd cede ceeb ceec cepa cepc cepe cepp cpaa cpac cpad cpap cpbc cpca cpce cpea cpeb cpep cppa cppd daab daad daae daap daba dabb dabp daca dace dada dade daeb dapa dape dapp dbcc dbcp dbpc dbpd dcbc dcca dccb dccc dccp dcdb dddd deac dead deae deap deba debe dec- deca decc decd dece deda dedd dede deeb deed deep depa depc depe depp dpaa dpac dpbc dpcp dppa dppc eaba eaca eacc eada eadb eadd eadp eaec eapc eapp ebac ebba ebbc ebcc ebed ecaa ecac ecad ecbc ecbe ecca eccb eccc ecce ecdc eced ecpa ecpd ecpp edac edad edca edda eddc edde eddp ede- edea eeca eede eeea eeee epaa epac epad epcc epec epee eppa eppc eppp paap paba paca pacd pace pada padd pade paea paec paep papa papb pape papp pbac pbcc pbed pbpa pcaa pcad pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcpb pcpp pdac pdca pdcp pdea pdpa peab peac peap peba peca pece ped- peda pede peec peed peep pepa pepd pepe ppac ppad ppap ppcc ppcd pppa pppd pppp